package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Slf4j
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 进行md5加密，然后再进行比对

        password = DigestUtils.md5DigestAsHex(password.getBytes());
        log.info("加密后的密码{}",password);
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        //1、将员工DTO转化为员工实体对象
        BeanUtils.copyProperties(employeeDTO, employee);

        //2、设置账号的状态
        employee.setStatus(StatusConstant.ENABLE);

        //3、设置密码，明文密码md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //4.设置创建时间、更新时间
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //5.设置创建人、修改人
        //employee.setCreateUser(BaseContext.getCurrentId());
        //employee.setUpdateUser(BaseContext.getCurrentId());


        //6、保存员工数据
        employeeMapper.insert(employee);
    }


    /**
     * 员工分页查询
     * @param epd
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO epd) {
        PageHelper.startPage(epd.getPage(),epd.getPageSize());
        List<Employee> list = employeeMapper.pageQuery(epd);
        Page<Employee> p = (Page<Employee>) list;
        return new PageResult(p.getTotal(),p.getResult());

    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {

        Employee emp = Employee.builder()
                .status(status)
                .id(id)
                .build();

        employeeMapper.update(emp);
    }

    @Override
    public Employee getById(Long id) {
        Employee emp = employeeMapper.selectById(id);
        emp.setPassword("****");
        return emp;
    }

    /**
     * 编辑员工信息
     * @param employeeDTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //1、将员工DTO转化为员工实体对象
        BeanUtils.copyProperties(employeeDTO,employee);
        //2、设置修改时间、修改人
       // employee.setUpdateTime(LocalDateTime.now());
       // employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);

    }
}
